Pumping apparatus for deep wells



Sept. 6, 1949. E. DA s. ROSA 2,480,969

Y PUMPIHGv APPARATUS Pon DEEP wELL's Filed Oct. 29, 1946 2 Sheets-Sheet 1 2i gli b 1% l l 2l v A Esau .Da'/va Fosa amuuqs Sept. 6 1949. E. DA s. RosA PUMPING APPARATUS FOR DEEP WELLS 2 Sheets-Sheet 2 Filed Oct. 29, 1946 gvwG/wfw Esau Da ,Ji/v Has-a Patented ept. 9 i9@ STATES PATENT OFFICE Application October 29, 1946, Serial No. 706,441 In Portugal November 15, 1945 Claims. l

This invention relates to pumping apparatus and has for its object to provide an arrangement for pumping liquid from wells embodying means for mixing air with the ascending column of liquid.

A further object of the invention is to provision of valve means permitting the pump to be utilized for clearing liquid from the mixing device and the pipes connecting therewith so that the mixing action of the mixing device may be initiated.

In the accompanying drawings wherein an approved embodiment of the invention is illustrated:

Figure l is a vertical sectional view through the improved pumping apparatus installed in operative position in a well, the valve device being shown in one position.

Figure 2 is a view similar to Figure l showing the valve device in the other position.

Figure 3 is an enlarged sectional view through the valve device removed and showing the valve plug in one position.

Figure t is a transverse sectional View of Figure.

Figure 5 is an enlarged view similar to view 3 showing the valve plug in the other position.

Figure 6 is an enlarged detail View of the mixing device removed.

Referring to the drawing in detail, B indicates a preferred type of pump and I designates the valve which is secured in position on the casing oi the pump. The valve consists of a casing Ia and plug Ib rotatably mounted by means of a stem Ic rotatably mounted in the cover plate I5. The casing la is formed with six substantial radial ports 2, 3, il, 5, t andi of which the ports 2 and ii are in permanent communication with the inlet and outlet ports of the pump B and the port l is in permanent communication with the atmosphere. The port Il constitutes an outlet and communicates with a pipe 8 for the delivery of the mixture of air and liquid while depending pipes t and it communicate with the two remaining ports 5 and t.

The valve plug Ib is provided with two diverging partitions l2 and i3 and two spaced parallel partitions 3l arranged between the diverging extremities of the partitions l2 and i3 thus forming at one side of the plug a passage 32 having divergent extremities 33 at the opposite side of the plug. The external surfaces of the diverging partitions l2 and i3 provide additional passages tt and 35.

The valve plug is conveniently movable to either of the two positions shown in Figures 3 and 5 by a 55 handle It attached to the stem Ic and in the position shown in Figures 2 and 3 communication is established between the pump outlet port 3 and the port 4 by the passage 35; the pump inlet port 2 communicates with the port 5 by the passage 32, Eiland the port 6 communicates with the`atmos- -pheric port 'l by the passage 3d. In the position shown in Figures 1 and 5 the valve plug is so ad- 'justed so that communication between the outlet port t and the pump is interrupted and instead the pump outlet 3 communicates simultaneously with both of the ports 5 and t. In this position the pump inlet 2 communicates with the atmosphere through the passage 3ft and port 'l and ccnsequently the pump operates to induce a ow of r through the port 'l and into the pipes 9 and The lower extremities of the pipes 9 and lil are connected with an air and liquid mixing device designated at D and consisting of a casing it having a port 36 in the upper extremity thereof communicating with the pipe 9 and a lateral port 3l communicating with the pipe it. The lower portion of the casing i6 is formed with a port i8 removably receiving an upwardly tapering nozzle 2li. The purpose of making the nozzle 2i! removabe is to permit it lto be interchanged with other nozzleshaving diameters of different bore to suit varying pumping conditions. The port 3l communicates by a passage lil with a circular mixing chamber 2l located between the port 36 and the discharge end of the nozzle 2t.

In use the pump B and valve I are mounted on a suitable support as shown in Figures 1 and 2 in such position that the pipes 9 and il] extendv into and below the surface of Water in a well P, the mixing device D being located a suitable distan^e below the liquid level. During inactive periods the water in the well rises into the pipes 9 and lll a substantial distance above the mixing device D and to condton the apparatus for operation the valve handle Il is turned to the position indicated at A as shown in Figures 1 and 5. When the pump is operated air is admitted through the port 2 and passage 3 and is discharged through the port 3 and passages 32 and 33 into both pipes 9 and lll. Thus the liquid A standing in the pipes and also contained within are put in communication with the pump inlet 2 by the passages 32 and 33 and the pump outlet 3 is connected with the port l and the delivery pipe 6 by the passage 35. The suction thus created in the pipe 9 and mixing chamber 2i by the pump B aspirates water through the nozzle 20 and air through the pipe I0, the air and water being mixed in the chamber 2| and eventually being drawn upwapdly through the pipe 9, through the passages 32 and 33, pump B and being discharged through the delivery pipe 8. The mixing effect of the device D aerates the column of liquid rising in the pipe 9 and reduces the weight of the liquid standing between the mixing device and the pump so that the load on said pump is reduced and the latter may be operated with the expenditure of less energy.

pipes with the Dump outlet port and operable in another-position to establish communication between the mixture conducting pipe and the pump inlet port and to simultaneously establish communication between the air supply pipe and the atmosphere.

.in said valve means in the rst mentioned position thereof is operative to connect the pump .inlet port with the atmosphere.

4. A pumping apparatus as claimed in claim 1 wherein saidmixing device is provided with a circular mixing chamber communicating laterally with the air supply pipe and communicating axially with the inlet port of the mixing device and mixture conducting pipe.

5. A pumping apparatus as claimed in claim 1 wherein said valve means includes a valve plug having divergent and parallel partitions arranged to form opposed peripheral passages and a passage having divergent extremities, said passage and thedivergent extremities thereof connecting both of said pipes with the pump outlet port 2. An apparatus as claimed in claim 1 pro- I vided. with a delivery pipe, the pump outlet port second mentioned position of the valve means.

3. An apparatus as claimed in claim 1 wherel being connected with the delivery pipe in the ,in said rst position of the valve means, said passage and one of the divergent extremities thereof connecting the mixture conducting pipe with the pump inlet port and one of said peripheral passages connecting the air supply pipe with the atmosphere in the second position of the valve means.

EsA A sIL'JA ROSE.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS 

